High precision earthquake locations reveal seismogenic structure beneath Mammoth Mountain, California
Stephanie G. Prejean, Anna Stork, William L. Ellsworth, David Hill, Bruce R. Julian
2003, Geophysical Research Letters (30)
In 1989, an unusual earthquake swarm occurred beneath Mammoth Mountain that was probably associated with magmatic intrusion. To improve our understanding of this swarm, we relocated Mammoth Mountain earthquakes using a double difference algorithm. Relocated hypocenters reveal that most earthquakes occurred on two structures, a near-vertical plane at 7–9 km...
Geology of the MER 2003 "Elysium" candidate landing site in southeastern Utopia Planitia, Mars
Kenneth L. Tanaka, Michael H. Carr, James A. Skinner, Martha S. Gilmore, Trent M. Hare
2003, Journal of Geophysical Research E: Planets (108)
The NASA Mars Exploration Rover (MER) Project has been considering a landing-site ellipse designated EP78B2 in southeastern Utopia Planitia, southwest of Elysium Mons. The site appears to be relatively safe for a MER landing site because of its predicted low wind velocities in mesoscale atmospheric circulation models and its low...
Effects of two classification strategies on a Benthic Community Index for streams in the Northern Lakes and Forests Ecoregion
Jason T. Butcher, Paul M. Stewart, Thomas P. Simon
2003, Ecological Indicators (3) 195-202
Ninety-four sites were used to analyze the effects of two different classification strategies on the Benthic Community Index (BCI). The first, a priori classification, reflected the wetland status of the streams; the second, a posteriori classification, used a bio-environmental analysis to select classification variables. Both classifications were examined by measuring...
A Benthic Community Index for streams in the Northern Lakes and Forests Ecoregion
Jason T. Butcher, Paul M. Stewart, Thomas P. Simon
2003, Ecological Indicators (3) 181-193
Encompassing the northern glaciated section of the Midwest United States, the Northern Lakes and Forests Ecoregion is characterized by mixed conifer and deciduous forests and wetlands. Sites were randomly selected in the ecoregion using the Environmental Protection Agency's Environmental Monitoring and Assessment Program designed to develop an index of...
Selection of flooded agricultural fields and other landscapes by female northern pintails wintering in Tulare Basin, California
Joseph P. Fleskes, Robert L. Jarvis, David S. Gilmer
2003, Wildlife Society Bulletin (31) 793-803
Habitat selection and use are measures of relative importance of habitats to wildlife and necessary information for effective wildlife conservation. To measure the relative importance of flooded agricultural fields and other landscapes to northern pintails (Anas acuta) wintering in Tulare Basin (TB), California, we radiotagged female pintails during late August-early...
Effects of subcutaneous transmitter implants on behavior, growth, energetics, and survival of common loon chicks
K.P. Kenow, M.W. Meyer, F. Fournier, W. H. Karasov, A. Elfessi, S. Gutreuter
2003, Journal of Field Ornithology (74) 179-186
High rates of Common Loon (Gavia immer) chick mortality have been documented in Wisconsin, especially on acidic lakes, but causes and timing of chick mortality are poorly understood. We modified and evaluated a subcutaneous transmitter implant technique for Common Loon chicks using wild and captive reared chicks. Results indicated that...
A mining impacted stream: Exposure and effects of lead and other trace elements on tree swallows (Tachycineta bicolor) nesting in the Upper Arkansas River Basin, Colorado
Christine M. Custer, T. W. Custer, A.S. Archuleta, L.C. Coppock, C.D. Swartz, J. W. Bickham
David J. Hoffman, Barnett A. Rattner, G. Allen Burton Jr., John Cairns Jr., editor(s)
2003, Book chapter, Handbook of ecotoxicology, second edition
No abstract available....
A review of lake trout (Salvelinus namaycush) restoration in Lake Ontario from an early life history perspective
John Fitzsimons, Brian F. Lantry, Robert O’Gorman
M. Munawar, editor(s)
2003, Book chapter, The state of Lake Ontario: past, present and future
The authors conclude that small numbers of lake trout spawned successfully each year during 1992-97 in Lake Ontario, although this has yet to result in a trend of increasing natural reproduction. Juxtaposed with the high abundance of mature fish (Selgeby et al., 1995), the situation in Lake Ontario suggests...
Human disruption of element interactions: Drivers, consequences, and trends for the twenty-first century
A.T. Austin, R. W. Howarth, Jill Baron, F. S. Chapin III, T.R. Christensen, E.A. Holland, M.V. Ivanov, A.Y. Lein, L.A. Martinelli, J. M. Melillo, C. Shang
J. M. Melillo, C.B. Field, B. Moldan, editor(s)
2003, Book chapter, Interactions of the major biogeochemical cycles: Global change and human impacts
No abstract available....
Sarcocysts of an unidentified species of Sarcocystis in the sea otter (Enhydra lutris)
J. P. Dubey, D. S. Lindsay, B.M. Rosenthal, N. J. Thomas
2003, Journal of Parasitology (89) 397-399
The number of Sarcocystis species that infect sea otters (Enhydra lutris) is unknown. Sea otter tissues were recently shown to harbor sarcocysts of S. neurona and of unidentified species of Sarcocystis. Whereas sarcocysts of S. neurona have walls 1–3 μm thick with type 9 villar protrusions, ultrastructure...
Homerange and movements of boreal toads in undisturbed habitats
E. Muths
2003, Copeia (2003) 160-165
Comparison is made of the population of ospreys in Cape May County, N.J., in the late 1930's with that in 1963, and with a population of these birds at Tilghman Island, Maryland. Production of young per nest in the 1930's compares favorably with the production of young in the populations...
MCB Camp Pendleton Arroyo Toad Monitoring Protocol: 1. Summary of results from a workshop on August 27, 2002; 2. Monitoring protocol and targeted studies
A.J. Atkinson, B.S. Yang, Robert N. Fisher, E. Ervin, T. J. Case, N. Scott, H.B. Shaffer
2003, Report
No abstract available at this time...
Population and nesting ecology of sandhill cranes at Grays Lake, Idaho, 1997-2000
I.J. Ball, J. E. Austin, A.R. Henry
2003, Report
Aquatic invertebrate and pondweed production in Unit 6 of the Des Lacs National Wildlife Refuge
N.H. Euliss Jr., D.M. Mushet, L.L. Strong
2003, Report
Correlates to survival of juvenile sea otters in Prince William Sound, Alaska, 1992-1993
Brenda E. Ballachey, James L. Bodkin, S. Howlin, A. M. Doroff, A.H. Rebar
2003, Canadian Journal of Zoology (81) 1494-1510
We estimated survival of sea otters (Enhydra lutris) for 1 year post weaning during 1992-1993 in Prince William Sound (PWS), location of the 1989 Exxon Valdez oil spill. We sampled 38 pups in eastern PWS (EPWS), an unoiled area occupied by sea otters for <15 years, and 33 pups from...
Characterization of Pasteurella multocida isolates from wetland ecosystems during 1996 to 1999
M.D. Samuel, D.J. Shadduck, Diana R. Goldberg, M. A. Wilson, D.O. Joly, M. A. Lehr
2003, Journal of Wildlife Diseases (39) 798-807
We cultured 126 Pasteurella multocida isolates, 92 from water and 34 from sediment samples collected from wetlands in the Pacific and Central flyways of the United States between 1996 and 1999. Most (121) of the isolates were P. multocida serotype 1, but serotypes 3, 3/4, 10, and 11 were also...
Patterns and processes of population change in selected nearshore vertebrate predators
James L. Bodkin, Brenda E. Ballachey, T.A. Dean, Daniel Esler
2003, Report, EVOS Restoration Project 423 Final Report
Sea otters and harlequin ducks have not fully recovered from the oil spill. This project will explore links between oil exposure and the lack of population recovery, with the intent of understanding constraints to recovery of these species and the nearshore environment. In FY 02, sea otter work will include...
Update COSEWIC status report on the shortjaw cisco, Coregonus zenithicus, in Canada
Thomas N. Todd
2003, Report, COSEWIC assessment and update status report on the shortjaw cisco Coregonus zenithicus in Canada
Extirpated in most of the Great Lakes, the shortjaw cisco, Coregonus zenithicus, is currently found in Lakes Superior and Nipigon in addition to at least 22 Canadian lakes. The species exhibits morphological and genetic variability throughout its range and may consist of more than one distinct taxon. However, a common...
A pre-vegetated mat technique for the restoration of submersed aquatic vegetation
R.G. Boustany
2003, Ecological Restoration (21) 87-94
Communities of submersed aquatic vegetation (SAV) provide critical habitat for wintering waterfowl and many commercially important fish species. Submersed aquatic vegetation also helps minimize storm damage by reducing wave action and stabilizing sediments, and they improve water quality by sequestering nutrients and contaminants (Zieman and Zieman 1989)....
Fire history of Granite Mountain, Lower Buffalo Wilderness, Arkansas: a report for the National Park Service, Buffalo National River
R.P. Guyette, M.C. Staumbaugh
2003, Report
Leaf litterbags: factors affecting capture of stream-dwelling salamanders
J. L. Waldron, C. Kenneth Dodd Jr., Jeffrey D. Corser
2003, Applied Herpetology (1) 23-36
No abstract available....
Accumulation of dioxins and furans in tree swallows (Tachycineta bicolor) nesting near Centredale Manor Restoration Project Superfund Site, Rhode Island
Christine M. Custer, T. W. Custer, C. J. Rosiu
2003, Organohalogen Compounds (62) 391-394
Abstract has not been submitted...
Polar bear, Ursus maritimus
Steven C. Amstrup
G.A. Feldhamer, B.C. Thompson, J.A. Chapman, editor(s)
2003, Book chapter, Wild Mammals of North America: Biology, management, and conservation
No abstract available....
A natural history survey of fens and palustrine wetlands in intermittent drainages of the Little Missouri Grassland
N.H. Euliss Jr., R.R. Tramontano, D.M. Mushet
2003, Report
Evaluation of the impacts of irrigation ground-water withdrawal on a prairie wetland
N.H. Euliss Jr., D.M. Mushet, G.A. Knutsen
2003, Report
